Hybrid tea rose plant named &#39;Meibderos&#39;

ABSTRACT

A new and distinct variety of Hybrid Tea rose plant is provided which abundantly forms attractive double yellow suffused with red blossoms having a very strong fragrance. The plant exhibits a semi-erect growth habit, very dense dark green foliage with a glossy aspect, and good resistance to Black Spot and Powdery Mildew. The attractive dark green foliage contrasts nicely with the blossom coloration. The new variety is particularly well suited for growing as attractive ornamentation in parks and gardens.

BOTANICAL/COMMERCIAL CLASSIFICATION

[0001]Rosa hybrida/Hybrid Tea Rose

VARIETAL DENOMINATION

[0002] cv. ‘Meibderos’

SUMMARY OF THE INVENTION

[0003] The new variety of Rosa hybrida Hybrid Tea rose plant was createdby artificial pollination wherein two parents were crossed whichpreviously had been studied in the hope that they would contribute thedesired characteristics. The female parent (i.e., the seed parent) wasthe ‘Purple Splendour’ variety (non-patented in the United States). Themale parent (i.e., the pollen parent) was the product of the cross ofthe ‘Johnago’ variety (non-patented in the United States) and the‘Meikinosi’ variety (non-patented in the United States). The ‘Meikinosi’variety sometimes is known as the ‘Tchin-Tchin’ variety. The parentageof the new variety can be summarized as follows:

‘Purple Splendour’×(‘Johnago’×‘Meikinosi’).

[0004] The seeds resulting from the above pollination were sown andsmall plants were obtained which were physically and biologicallydifferent from each other. Selective study resulted in theidentification of a single plant of the new variety.

[0005] It was found that the new variety of the present invention

[0006] (a) exhibits a semi-erect growth habit,

[0007] (b) abundantly forms on a continuous basis attractive doubleyellow suffused with red blossoms having a very strong fragrance.

[0008] (c) forms very dense dark green foliage having a glossy aspectthat contrasts well with the blossom coloration, and

[0009] (d) is particularly well suited for growing as attractiveornamentation in parks and gardens.

[0010] The disease resistance is good with respect to Black Spot andPowdery Mildew, and the blossom coloration is stable.

[0011] The new variety well meets the needs of the horticulturalindustry and can be grown to advantage in the landscape where attractiveornamentation is desired.

[0012] The new variety can be readily distinguished from its ancestors.For instance, the ‘Purple Splendour’ variety forms blossoms of a mauveblend having approximately 26 petals per blossom on average and only aslight fragrance. The ‘Johnago’ variety forms blossoms of phlox pinkwith a canary yellow base of only slight fragrance. The ‘Meikinosi’variety forms chrome yellow blossoms having approximately 30 petals onaverage.

[0013] The new variety has been found to undergo asexual propagation inFrance by a number of routes, including budding, grafting, and cuttage.Asexual propagation by the above-mentioned techniques in France hasshown that the characteristics of the new variety are stable and arestrictly transmissible by such asexual propagation from one generationto another.

[0014] The new variety has been named the ‘Meibderos’ variety.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

[0015] The accompanying photograph shows as nearly true as it isreasonably possible to make the same, in a color illustration of thischaracter, typical specimens of the plant parts of the new variety. Therose plants of the new variety were approximately 18 months of age andwere observed during June while budded on Rosa froebelli understock andgrowing outdoors at Le Cannet des Maures, Var, France. Dimensions incentimeters are indicated at the bottom of the photograph.

[0016]FIG. 1—illustrates a specimen of a young shoot;

[0017]FIG. 2 illustrates a specimen of a floral bud before the openingof the sepals;

[0018]FIG. 3—illustrates a specimen of a floral bud at the opening ofthe sepals;

[0019]FIG. 4—illustrates a specimen of a floral bud at the opening ofthe petals;

[0020]FIG. 5—illustrates a specimen of a flower in the course ofopening;

[0021]FIG. 6—illustrates a specimen of an open flower—plan view—obverse;

[0022]FIG. 7—illustrates a specimen of an open flower—plan view—reverse;

[0023]FIG. 8—illustrates a specimen of a fully open flower—planview—obverse;

[0024]FIG. 9—illustrates a specimen of a fully open flower—planview—reverse;

[0025]FIG. 10—illustrates a specimen of a floral receptacle showing thearrangement of the stamens and pistils;

[0026]FIG. 11—illustrates a specimen of a floral receptacle showing thearrangement of the pistils (stamens removed);

[0027]FIG. 12—illustrates a specimen of a flowering stem;

[0028]FIG. 13—illustrates a specimen of a main branch;

[0029]FIG. 14—illustrates a specimen of a leaf with three leaflets—planview—upper surface;

[0030]FIG. 15—illustrates a specimen of a leaf with five leaflets—planview—under surface; and

[0031]FIG. 16—illustrates a specimen of a leaf with seven leaflets—planview—upper surface.

DETAILED DESCRIPTION

[0032] The chart used in the identification of the colors is that of TheRoyal Horticultural Society (R.H.S. Colour Chart). The description isbased on the observation of eighteen month-old plants during June whilebudded on Rosa froebelli understock and growing outdoors at Le Cannetdes Maures, Var, France.

[0033] Class: Hybrid Tea.

[0034] Plant:

[0035]Height.—approximately 80 to 90 cm on average at the end of thegrowing season.

[0036]Width.—approximately 70 cm on average at the end of the growingseason.

[0037]Habit.—semi-erect.

[0038] Branches:

[0039]Color.—young stems: near Yellow-Green Group 146B. — adult wood:near Yellow-Green Group 146A.

[0040]Thorns.—size: variable (as illustrated). — quantity: on 15 cm ofyoung stems approximately 6 on average more than 5 mm in length andapproximately 6 on average less than 5 mm in length, and on 15 mm ofadult stems approximately 9 on average more than 5 mm in length and 3 onaverage less than 5 mm in length. — color: near Yellow-Green Group 152Cslightly suffused with Greyed-Red Group 178D on young stems and on adultwood. — configuration: curved downwards on the upper surface and concaveunder surface with a narrow and oval base.

[0041] Leaves:

[0042]Stipules.—adnate, pectinate, rather broad.

[0043]Petioles.—upper surface: slightly glandular with a few prickles,and near Green Group 139A in coloration. — under surface: bears a fewprickles, and near Yellow-Green Group 147B in coloration. — length:approximately 2.2 cm for the terminal leaflet.

[0044]Leaflets.—number: 3, 5, and 7. — shape: somewhat ovate with anobtuse base and an acute tip (as illustrated). — size: the terminalleaflets commonly are approximately 7 cm in length and approximately 5cm in width on average. — serration: simple, fine, and regular (asillustrated). — texture: leathery. — general appearance: very dense, anddark green with a glossy aspect. — color (young foliage): upper surface:near Green Group 139A lightly suffused with Greyed-Red Group 178A. undersurface: near Yellow-Green Group 147B suffused with Greyed-Red Group178A. — color (adult foliage): upper surface: near Green Group 139A.under surface: near Yellow-Green Group 147B.

[0045] Infloresence:

[0046]Number of flowers.—commonly one to three per stem.

[0047]Peduncle.—with many tiny prickles, near Green Group 146D suffusedwith Greyed-Red Group 182B in coloration, and the length isapproximately 3 cm on average.

[0048]Sepals.—upper surface: tomentose and near Yellow-Green Group 147Cwith slight anthocyanin coloration near Greyed-Red Group 182B. — undersurface: slightly glandular and near Yellow-Green 147B with slightanthocyanin coloration near Greyed-Red Group 182B. — configuration:elongated with a few small extensions (as illustrated).

[0049]Buds.—shape: conical. — size: large (as illustrated). — length:approximately 2.5 cm on average. — color: upper surface: near YellowGroup 13B widely suffused with Orange Group 26A and Red Group 55A as thecalyx breaks. under surface: near Yellow Group 13C widely suffused withOrange Group 26B and Red Group 55C as the calyx breaks.

[0050]Flower.—shape: cup-shaped. — diameter: approximately 10 to 11 cmon average. — color (when blooming): — upper surface: Yellow Group 13Btowards the base and slightly suffused with Orange-Red Group 32D and RedGroup 48D. The petal margin is Yellow Group 13B widely suffused with RedGroup 48D. under surface: Yellow Group 13C towards the petal margin isnear Red Group 49C. — basal petal spot: near Green-Yellow Group 13B onthe upper and under surfaces. — fragrance: very strong. — lastingquality: the blossoms commonly last approximately 10 to 12 days on theplant average. — petal number: approximately 50 to 54 on average undernormal growing conditions. — petal shape: the base is obtuse and the tipis rounded and slightly denticulated and undulated. — petal arrangement:imbricated; and without petaloids. — petal drop: good with the petalscommonly detaching cleanly. — stamen number: approximately 171 onaverage. — anthers: regularly arranged around the styles, approximately0.5 cm in size, and near Yellow Group 13A in coloration. — pollen:present and near Yellow-Orange Group 16A in coloration. — filaments:near Yellow Group 13A in coloration. — pistils: approximately 110 onaverage. — stigmas: near Yellow Group 12C in coloration. — styles: nearYellow Group 12D in coloration. — receptacle: slightly glandular, nearYellow-Green Group 147B with slight anthocyanin coloration nearGreyed-Red Group 182B, and funnel-shaped in longitudinal section. Thelength and width are each approximately 1 cm on average. — hips: Concealin configuration, approximately 2 to 2.5 cm in size, and the colorationis near Yellow-Green Group 146D widely suffused with Orange Group 25C.

[0051] Development:

[0052]Vegetation.—very strong.

[0053]Blooming.—very abundant and continuous.

[0054]Resistance to diseases.—good with respect to Black Spot andPowdery Mildew.

[0055]Aptitude to bear fruit.—good.

I claim:
 1. A new and distinct variety of Hybrid Tea rose plantcharacterized by the following combination of characteristics: (a)exhibits semi-erect growth habit, (b) abundantly forms on a continuousbasis attractive double yellow suffused with red blossoms having a verystrong fragrance, (c) forms very dense dark green foliage having aglossy aspect that contrasts well with the blossom coloration, and (d)is particularly well suited for growing as attractive ornamentation inparks and gardens; substantially as herein shown and described.